How to transfer tx offline?

[Wangmmx]

Hello, I want to build an offline transaction body, which not sent to the contract address, but the p2p transfer transaction.
Is there any demo that I can refer to?

I found this:https://github.com/AElfProject/aelf-automation-test/blob/cb8a4646fc8806d0ded5cb4e9ab9a438f6403e4c/test/AElf.Automation.E2ETest/ApiSuits/ChainApiTests.cs#L194

But I don't know how can I create the Client instance, looking forward to your reply